'Reaching the moon came at a price'

Former astronaut Gene Cernan, the last person to walk on the moon, has died at the age of 82.

Mark Craig is director of the Last Man on the Moon, a documentary about Cernan. He says that although the famous astronaut was proud of his achievements, Cernan recognised that reaching the moon "came at a high price".

(Image: Gene Cernan, credit: Reuters)